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The roots of the equation 7x² + x – 1 = 0 are (a) real and distinct (b) real and equal (c) not real (d) none of these

The roots of the equation 7x² + x – 1 = 0 are
(a) real and distinct
(b) real and equal
(c) not real
(d) none of these

Grade:12th pass

1 Answers

Pawan Prajapati
askIITians Faculty 8740 Points
4 months ago
Answer: a Explaination:Reason: Here a = 2, b = 1, c = -1 ∴ D = b² – 4ac = (1)² – 4 × 2 × (-1) = 1 + 8 = 9 > 0 ∴ Roots of the given equation are real and distinct.

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